diff options
| author | Sergey Petrunya <psergey@askmonty.org> | 2012-08-27 08:44:58 +0400 |
|---|---|---|
| committer | Sergey Petrunya <psergey@askmonty.org> | 2012-08-27 08:44:58 +0400 |
| commit | 8eb16159e19b38e67728fca7c7f316f921a2c7e0 (patch) | |
| tree | c6cf6b7e40dde9d8c0edb5bf5674ca1b434bea8c /sql/sql_join_cache.cc | |
| parent | fdab0300c1e11511df4bae3072eb642fdc222ff8 (diff) | |
| download | mariadb-git-8eb16159e19b38e67728fca7c7f316f921a2c7e0.tar.gz | |
Cassandra storage engine: BKA support
- We use HA_MRR_NO_ASSOC ("optimizer_switch=join_cache_hashed") mode
- Not able to use BKA's buffers yet.
- There is a variable to control batch size
- There are status counters.
- Nedeed to make some fixes in BKA code (to be checked with Igor)
Diffstat (limited to 'sql/sql_join_cache.cc')
| -rw-r--r-- | sql/sql_join_cache.cc | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sql/sql_join_cache.cc b/sql/sql_join_cache.cc index f953cf4df57..d785366ae69 100644 --- a/sql/sql_join_cache.cc +++ b/sql/sql_join_cache.cc @@ -3876,8 +3876,11 @@ int JOIN_TAB_SCAN_MRR::next() If a record in in an incremental cache contains no fields then the association for the last record in cache will be equal to cache->end_pos */ + /* + psergey: this makes no sense where HA_MRR_NO_ASSOC is used. DBUG_ASSERT(cache->buff <= (uchar *) (*ptr) && (uchar *) (*ptr) <= cache->end_pos); + */ if (join_tab->table->vfield) update_virtual_fields(join->thd, join_tab->table); } @@ -4543,7 +4546,7 @@ bool JOIN_CACHE_BKAH::prepare_look_for_matches(bool skip_last) { last_matching_rec_ref_ptr= next_matching_rec_ref_ptr= 0; if (no_association && - (curr_matching_chain= get_matching_chain_by_join_key())) + !(curr_matching_chain= get_matching_chain_by_join_key())) //psergey: added '!' return 1; last_matching_rec_ref_ptr= get_next_rec_ref(curr_matching_chain); return 0; |